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9105207012 = 22321137621431
BaseRepresentation
bin10000111101011011…
…00110111011100100
3212111120001102220100
420132231212323210
5122121413111022
64103300104100
7441430661016
oct103655467344
925446042810
109105207012
113952719880
121921395030
13b214c7b75
146253a01b6
1538455e1ac
hex21eb66ee4

9105207012 has 72 divisors (see below), whose sum is σ = 25786942272. Its totient is φ = 2684577600.

The previous prime is 9105207011. The next prime is 9105207073. The reversal of 9105207012 is 2107025019.

It is not an unprimeable number, because it can be changed into a prime (9105207011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 296064 + ... + 325367.

It is an arithmetic number, because the mean of its divisors is an integer number (358151976).

Almost surely, 29105207012 is an apocalyptic number.

It is an amenable number.

9105207012 is an abundant number, since it is smaller than the sum of its proper divisors (16681735260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9105207012 is a wasteful number, since it uses less digits than its factorization.

9105207012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621489 (or 621484 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 9105207012 is about 95421.2083972950. The cubic root of 9105207012 is about 2088.1576074496.

The spelling of 9105207012 in words is "nine billion, one hundred five million, two hundred seven thousand, twelve".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 37 44 66 74 99 111 132 148 198 222 333 396 407 444 666 814 1221 1332 1628 2442 3663 4884 7326 14652 621431 1242862 1864293 2485724 3728586 5592879 6835741 7457172 11185758 13671482 20507223 22371516 22992947 27342964 41014446 45985894 61521669 68978841 82028892 91971788 123043338 137957682 206936523 246086676 252922417 275915364 413873046 505844834 758767251 827746092 1011689668 1517534502 2276301753 3035069004 4552603506 9105207012